What CO₂ methods are there for indoor growing? CO₂ bag vs. bottle vs. generator CO₂ (carbon dioxide) is a key growth factor alongside light, water and nutrients. Especially in closed indoor setups, the natural CO₂ content is often too low - which means that photosynthesis cannot reach its full potential. The most popular CO₂ methods in indoor growing are ✅ CO₂ bag (Bonsanto)✅ CO₂ bottle [...]